CN106451864B - Permanent magnet traction motor mixed ventilation cooling system and method - Google Patents
Permanent magnet traction motor mixed ventilation cooling system and method Download PDFInfo
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- CN106451864B CN106451864B CN201610994005.XA CN201610994005A CN106451864B CN 106451864 B CN106451864 B CN 106451864B CN 201610994005 A CN201610994005 A CN 201610994005A CN 106451864 B CN106451864 B CN 106451864B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention relates to a kind of permanent magnet traction motor mixed ventilation cooling system and methods, cooling system is made of the radial ventilation cooling system and axial ventilation cooling system for independently driving work, cooling rotor, permanent magnet are directly brushed by radial ventilation cooling system, by the cooling End winding of axial ventilation cooling system, balanced complete machine temperature rise.The present invention separates radial ventilation and axial ventilation in mass transport, and ventilating system windage loss is smaller；The more serious position of each self-cooling motor internal heat generation of two sets of ventilating systems, cooling performance are excellent.Radial ventilation cooling system divides into air intake passage and air-out passage two parts by separation partition, and the cooling gas temperature rise into each radial air openings is similar, ensure that motor temperature rise in axial harmony；Axial ventilation cooling system ensure that motor temperature rise in circumferential harmony.The present invention has good cooling results inside motor, and the harmonious good feature of motor temperature rise is suitable for popularization and application.
Description
Technical field
The present invention relates to technical field of motor manufacture, relate generally to electromotor cooling system, more particularly to middle-size and small-size track
Traffic, public transport, electric vehicle permanent magnet traction motor cooling system, it is specifically a kind of that there is axial, radial two sets of ventilations
The permanent magnet traction motor cooling system and method in path.
Background technique
Magneto has the characteristics that efficient, high power density, and higher effect is also able to maintain under light running state
Rate and power factor can effectively save energy as traction electric machine compared to asynchronous machine in the long-term work of electric vehicle
Source.Due to electric vehicle motor using Frequency Converter Control and working frequency it is often higher, exist in rotor and permanent magnet big
The space harmonics and time harmonic of amount, fever are serious.Therefore, it is necessary to establish a set of effective motor inner cooling system to guarantee
The output torque ability and operational reliability of motor.
Since permanent magnet capacity of heat transmission is poor, thermal coefficient is typically less than the 1/5 of silicon steel material.In addition, for
The needs of mounting process and production technology, there are biggish gaps between the mounting groove that permanent magnet and rotor core open up, and influence
The transmitting of permanent magnetism body heat content.Traditional magneto axial ventilation system is lower to the indirect cooling efficiency of permanent magnet, is difficult to protect
Demonstrate,prove its heat-sinking capability.And in the mixed ventilation structure of previous asynchronous machine, radial wind path and axial wind path crosslinking, for middle-size and small-size
Traction electric machine windage loss is larger, limits the efficiency of motor.
Summary of the invention
Goal of the invention
It is an object of the invention to overcome the deficiencies in the prior art to devise one kind and have axis for permanent magnet traction motor
To, radial two sets of electromotor cooling systems of cooling air duct for separating in mass transport, being crosslinked in heat transmission.
Technical solution
A kind of permanent magnet traction motor mixed ventilation cooling system, bearing are installed between end cap and shaft, and stator coil is around the home
In in the fluting of stator core, permanent magnet is built in rotor core；Cooling system is divided into radial ventilation system and axial ventilation
System；Axial ventilation system includes that go out the rotor core lamination stack swaging of rotor axial ventilation hole configuration logical at rotor axial for punching
The stator-core lamination that air holes, punching go out stator shaft orientation ventilation hole configuration laminates to form stator shaft orientation ventilation hole and axial wind path
Centrifugal fan；Axial wind path centrifugal fan is mounted on machine shaft in anti-drive end and shaft synchronous rotary in end cap,
Driving axial wind path cooling wind；Radial ventilation system includes centrifugal fan, ventilation case, stator radial air openings and rotor diameter
To ventilation hole；Radial wind path centrifugal fan is installed on end cap outer shaft anti-drive end, with shaft synchronous rotary, drives diameter aweather
Road cooling wind；Ventilation case is installed on outside stator core；Rotor core and stator core use segmental structure, adjacent rotor core
Gap between lamination constitutes rotor radial ventilation hole, and the gap between adjacent stator-core lamination constitutes stator radial ventilation
Hole；It is provided with radial wind path cooling air inlet positioned at the end of the ventilation case of shaft anti-drive end, the other end of ventilation case is provided with diameter
Aweather way outlet.
Radial wind path is separated out air intake passage and air-out passage by separation partition, and it is radially logical to enter each stator by ventilation case
The cooling wind temperature rise of air holes is similar.
Separation partition lower end is folded to air intake passage.
The cooling means of above-mentioned permanent magnet traction motor mixed ventilation cooling system, including radial ventilation system are cooling and axial
Ventilating system is cooling；Axial wind path cooling wind by being installed on anti-drive end inside motor, with the axial wind path of shaft synchronous rotary
Centrifugal fan driving, is transmitted in motor cavity by stator shaft orientation ventilation hole and drives end, return to axis by rotor axial ventilation hole
To wind path centrifugal fan position, circulating cooling wind path is formed；Radial wind path cooling wind is by being installed on outside electric motor end cap with shaft
The radial wind path centrifugal fan of synchronous rotary drives, in the ventilation case installed outside into stator core, by stator radial ventilation
The air intake passage in hole enters motor；Due to separating the effect of partition, radial wind path cooling wind is entered by stator radial air openings to be turned
Sub- radial air openings, are returned in ventilation case by air-out passage, go out motor along transfers.
Axial ventilation wind path and radial ventilation wind path separate in mass transport, are independently driven by respective fan, ventilation path
Diameter is indirectly clear, windage loss is small.
Axial ventilation wind path and radial ventilation wind path exist hot in stator radial air openings and rotor radial vent locations
Amount transmission interaction, balanced cooling wind temperature rise.
Radial ventilation cooling system is divided into air intake passage and air-out passage by separation partition, and it is each fixed to be entered by ventilation case
The cooling wind temperature rise of sub- radial air openings is similar, balanced motor axial temperature rise.
Separation partition lower end is folded to air intake passage, plays the role of wind-guiding, and radial cooling wind is made to tend to enter rotor diameter
To ventilation hole.
Advantage and effect
Compared with prior art, the advantages of this reality is invented and good effect are as follows:
(1) radial wind path and axial wind path are separated in mass transport, radial wind path is outside axially through stator core
Ventilation case leak out, windage loss is lower.
(2) cooling system directly brushes cooling rotor core, permanent magnet by radial wind path, passes through axial wind path and realizes end
The cooling of portion's winding and the temperature rise of balanced complete machine, Each performs its own functions for two sets of cooling air ducts, since two sets of ventilating systems are respectively cooling electric
The more serious position of machine internal heat generation, system cooling performance are excellent.
(3) radial ventilation cooling system is divided into air intake passage, air-out passage two parts by separation partition, ensure that by each
The cooling wind temperature rise that radial air openings flow into is similar, it is ensured that the uniformity that motor is distributed in axial temperature rise；It is cold by axial ventilation
But system ensure that motor in the uniformity of circumferential Distribution of temperature rise.
(4) radial wind path and axial wind path cross in stator core position, by the lower radial wind path cooling wind band of temperature rise
Walk part axial direction cooling wind heat.
(5) radial wind path cooling wind directly brushes stator core before flowing into radial passage in ventilation case, further strong
Change the heat-sinking capability of motor.
Detailed description of the invention
Fig. 1 is motor axial direction cooling air duct schematic diagram.
Fig. 2 is motor radial direction cooling air duct cross section ventilating path figure.
Fig. 3 is motor radial direction cooling air duct air intake passage ventilating path figure.
Fig. 4 is motor radial direction cooling air duct air-out passage ventilating path figure.
Fig. 5 is motor radial direction cooling air duct schematic diagram.
Description of symbols:
1. axial wind path cooling wind, 2. rotor axial ventilation holes, 3. permanent magnets, 4. axial wind path centrifugal fans,
5. stator shaft orientation ventilation hole, 6. air-out passages, 7. separation partitions, 8. radial wind path cooling winds, 9. air intake passages, 10. diameters
It is cooling to wind path centrifugal fan, 11. rotor radial ventilation holes, 12. stator coils, 13. ventilation cases, 14. radial wind paths
Wind entrance, 15. radial wind path cooling air outlets, 16. stator radial air openings, 17. bearings, 18. rotor cores, 19. are determined
Sub- iron core, 20. end caps, 21. shafts.
Specific embodiment:
Following further describes the present invention with reference to the drawings:
The invention proposes a kind of permanent magnet traction motor mixed ventilation cooling systems, as shown in Fig. 1 ~ Fig. 5, the bearing of motor
17 are installed between end cap 20 and shaft 21, and stator coil 12 is wound in the fluting of stator core 19, and permanent magnet 3 is built in rotor
In iron core 18.Cooling system is divided into radial ventilation system and axial ventilation system.
Axial ventilation system includes that punching goes out the rotor core lamination stack swaging of rotor axial ventilation hole configuration into armature spindle
The stator-core lamination for going out stator shaft orientation ventilation hole configuration to ventilation hole 2, punching laminates to form stator shaft orientation ventilation hole 5 and axis
To wind path centrifugal fan 4；Axial wind path centrifugal fan 4 is mounted on machine shaft 21 in the anti-drive end in end cap 20, and
21 synchronous rotary of shaft, driving axial wind path cooling wind 1.
Radial ventilation system includes centrifugal fan 10, ventilation case 13, stator radial air openings 16 and rotor radial ventilation
Hole 11；Radial wind path centrifugal fan 10 is installed on 20 outer shaft of end cap, 21 anti-drive end, with 21 synchronous rotary of shaft, drives diameter
To wind path cooling wind 8；Ventilation case 13 is installed on outside stator core 19；Rotor core 18 and stator core 19 use segmental structure,
Gap between adjacent rotor core lamination constitutes rotor radial ventilation hole 11, the gap between adjacent stator-core lamination
Constitute stator radial air openings 16；Radial wind path cooling air inlet is provided with positioned at the end of the ventilation case 13 of 21 anti-drive end of shaft
14, the other end of ventilation case 13 is provided with radial wind path outlet 15.
Radial wind path is separated out air intake passage 9 and air-out passage 6 by separation partition 7, ensure that and is entered respectively by ventilation case 13
The cooling wind temperature rise of a stator radial air openings 16 is similar, balanced motor axial temperature rise.
Separation 7 lower end of partition is folded to air intake passage 9, plays the role of wind-guiding, and radial cooling wind is made to tend to enter rotor
Radial air openings.
The cooling means of above-mentioned permanent magnet traction motor mixed ventilation cooling system is as follows: including radial ventilation system it is cooling and
Axial ventilation system is cooling；Axial wind path cooling wind 1 by being installed on anti-drive end inside motor, with the axial direction of shaft synchronous rotary
Wind path centrifugal fan 4 drives, and is transmitted in motor cavity by stator shaft orientation ventilation hole 5 and drives end, by rotor axial ventilation hole 2
Axial 4 position of wind path centrifugal fan is returned to, circulating cooling wind path is formed；Radial wind path cooling wind 8 is by being installed on electric motor end cap
The 20 outer radial wind path centrifugal fans 10 with shaft synchronous rotary drive, the ventilation case 13 installed outside into stator core 19
In, motor is entered by the air intake passage 9 of stator radial air openings 16；Due to separating the effect of partition 7, radial wind path cooling wind 8
Enter rotor radial ventilation hole 11 by stator radial air openings 16, is returned in ventilation case 13 by air-out passage 6, gone out along transfers
Motor.
In motor mixed ventilation cooling system, axial ventilation wind path and radial ventilation wind path separate in mass transport,
It is independently driven by respective fan, ventilating path is indirectly clear, windage loss is small.
Axial ventilation wind path and radial ventilation wind path are deposited in stator radial air openings 16 and 11 position of rotor radial ventilation hole
In heat transmission interaction, balanced cooling wind temperature rise.
Present invention assembly and the course of work are as follows:
Permanent magnet 3 is built in rotor core 18；Rotor core lamination punching goes out rotor axial ventilation hole configuration, laminates shape
At rotor axial ventilation hole 2；Stator-core lamination punching goes out stator shaft orientation ventilation hole configuration, laminates to form stator shaft orientation ventilation hole
5；Axial wind path centrifugal fan 4 is installed on machine shaft 21 in 21 synchronous rotary of anti-drive end in end cap 20 and shaft, driving
Axial wind path cooling wind 1；Stator coil 12 is placed in the slot that stator core 19 opens up by wire winding；Bearing 17 is installed on end
Between lid 20 and shaft 21；Ventilation case 13 is installed on outside stator core 18；Rotor core 18 and stator core 19 by segmental structure,
Installation forms rotor radial ventilation hole 11 and stator radial air openings 16；Motor radial direction wind path cooling wind 8 is by being installed on end cap 20
Outside, radial wind path centrifugal fan 10 driving of 21 anti-drive end of shaft, enters ventilation case by radial wind path cooling air inlet 14
13；Radial wind path is divided into 6 two parts of air intake passage 9 and air-out passage by separation partition 7；Radial wind path cooling wind 8 by diameter aweather
Way outlet 15 leaves motor.
The present invention will be further described with reference to the accompanying drawing:
Fig. 1 is motor axial direction ventilating system schematic diagram, axial wind path cooling wind 1 by be installed on anti-drive end inside motor,
It drives with the axial wind path centrifugal fan 4 of shaft synchronous rotary, is transmitted in motor cavity by motor stator axial ventilation hole 5
End is driven, position of fan is returned to by rotor axial ventilation hole 2, forms circulating cooling wind path.
Fig. 5 is motor radial ventilation system schematic diagram, and in conjunction with Fig. 2 ~ Fig. 4, radial wind path cooling wind 8 is as shown in figure 3, by pacifying
It drives loaded on the outer radial wind path centrifugal fan 10 with shaft synchronous rotary of electric motor end cap 20, is installed outside into stator core
In ventilation case 13, motor is entered by the air intake passage 9 of stator radial air openings 16.As shown in Fig. 2, due to the work for separating partition 7
With radial ventilation system cooling wind enters rotor radial ventilation hole 11 by stator radial air openings 16, by stator radial air openings
16 air-out passages 6 return in ventilation case 13, go out motor along transfers, as shown in Figure 4.
Due to the effect of radial ventilation cooling system in the present invention, cooling wind can directly brush turning for more difficult heat dissipation
Sub- iron core 18,3 interior location of permanent magnet, as shown in Fig. 2, rotor core 18, permanent magnet 3 is helped to radiate.Due to by radial ventilation
Cooling system is separated into air intake passage 9,6 two parts of air-out passage, ensure that flowed by each stator radial air openings 16 it is cold
But wind-warm syndrome rises similar, it is ensured that the uniformity that motor is distributed in axial temperature rise；It ensure that motor in circumferential direction by axial ventilation system
The uniformity of Distribution of temperature rise.
Claims (7)
1. a kind of permanent magnet traction motor mixed ventilation cooling system, bearing (17) is installed between end cap (20) and shaft (21), fixed
Subcoil (12) is wound in the fluting of stator core (19), and permanent magnet (3) is built in rotor core (18)；Its feature exists
In: cooling system is divided into radial ventilation system and axial ventilation system；Axial ventilation system includes that punching goes out rotor axial ventilation
The rotor core lamination stack swaging of hole configuration goes out the stator of stator shaft orientation ventilation hole configuration at rotor axial ventilation hole (2), punching
Core-lamination stack laminates to form stator shaft orientation ventilation hole (5) and axial wind path centrifugal fan (4)；Axial wind path centrifugal fan
(4) be mounted on machine shaft (21) in end cap (20) anti-drive end and shaft (21) synchronous rotary, driving axial wind path it is cold
But wind (1)；Radial ventilation system includes centrifugal fan (10), ventilation case (13), stator radial air openings (16) and rotor diameter
To ventilation hole (11)；Radial wind path centrifugal fan (10) is installed on end cap (20) outer shaft (21) anti-drive end, with shaft
(21) synchronous rotary drives radial wind path cooling wind (8)；Ventilation case (13) is installed on stator core (19) outside；Rotor core
(18) segmental structure is used with stator core (19), the gap between adjacent rotor core lamination constitutes rotor radial ventilation hole
(11), the gap between adjacent stator-core lamination constitutes stator radial air openings (16)；Positioned at shaft (21) anti-drive end
The end of ventilation case (13) be provided with radial wind path cooling air inlet (14), the other end of ventilation case (13) is provided with radial wind path and goes out
Mouth (15)；
Radial wind path is separated out air intake passage (9) and air-out passage (6) by separation partition (7), is entered by ventilation case (13) each
The cooling wind temperature rise of stator radial air openings (16) is similar.
2. permanent magnet traction motor mixed ventilation cooling system according to claim 1, it is characterised in that: separation partition (7)
Lower end is folded to air intake passage (9).
3. the cooling means of permanent magnet traction motor mixed ventilation cooling system according to claim 1, it is characterised in that: packet
It is cooling cooling with axial ventilation system to include radial ventilation system；Axial wind path cooling wind (1) is non-driven inside motor by being installed on
End drives with the axial wind path centrifugal fan (4) of shaft synchronous rotary, is transmitted to motor by stator shaft orientation ventilation hole (5)
Intracavitary driving end returns to axial wind path centrifugal fan (4) position by rotor axial ventilation hole (2), forms circulating cooling wind path；
Radial wind path cooling wind (8) is by being installed on electric motor end cap (20) outside with the radial wind path centrifugal fan (10) of shaft synchronous rotary
Driving, in the ventilation case (13) installed outside into stator core (19), by stator radial air openings (16) air intake passage (9) into
Enter motor；Due to separating the effect of partition (7), radial wind path cooling wind (8) enters rotor diameter by stator radial air openings (16)
To ventilation hole (11), is returned in ventilation case (13) by air-out passage (6), go out motor along transfers.
4. the cooling means of permanent magnet traction motor mixed ventilation cooling system according to claim 3, it is characterised in that: axis
To ventilation wind path and radial ventilation wind path separated in mass transport, independently driven by respective fan, ventilating path indirectly clearly,
Windage loss is small.
5. the cooling means of permanent magnet traction motor mixed ventilation cooling system according to claim 3, it is characterised in that: axis
To ventilation wind path and radial ventilation wind path, in stator radial air openings (16) and rotor radial ventilation hole (11) position, there are heats
Transmission interaction, balanced cooling wind temperature rise.
6. the cooling means of permanent magnet traction motor mixed ventilation cooling system according to claim 3, it is characterised in that: diameter
Air intake passage (9) and air-out passage (6) are divided by separation partition (7) to ventilation cooling system, entered by ventilation case (13) each
The cooling wind temperature rise of a stator radial air openings (16) is similar, balanced motor axial temperature rise.
7. the cooling means of permanent magnet traction motor mixed ventilation cooling system according to claim 3, it is characterised in that: point
Air intake passage (9) are folded to from partition (7) lower end, play the role of wind-guiding, tend to radial cooling wind logical into rotor radial
Air holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610994005.XA CN106451864B (en) | 2016-11-11 | 2016-11-11 | Permanent magnet traction motor mixed ventilation cooling system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610994005.XA CN106451864B (en) | 2016-11-11 | 2016-11-11 | Permanent magnet traction motor mixed ventilation cooling system and method |
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| CN106451864A CN106451864A (en) | 2017-02-22 |
| CN106451864B true CN106451864B (en) | 2019-05-14 |
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| CN106877574A (en) * | 2017-04-13 | 2017-06-20 | 哈尔滨理工大学 | A kind of squirrel-cage motor inverted ventilation method |
| CN108566022B (en) * | 2018-03-06 | 2024-03-08 | 佳木斯电机股份有限公司 | Cooling system and method for large motor bearing |
| CN108711965A (en) * | 2018-08-28 | 2018-10-26 | 中车株洲电机有限公司 | A kind of magneto |
| CN109773353A (en) * | 2019-03-15 | 2019-05-21 | 安徽同兴科技发展有限责任公司 | The high-accuracy laser cutting machine of big stroke based on Permanent Magnet Linear Servo Motor System |
| CN110474485A (en) * | 2019-07-17 | 2019-11-19 | 南京师范大学 | A kind of high-speed motor cooling system |
| CN113991906A (en) * | 2021-11-02 | 2022-01-28 | 中国船舶重工集团公司第七0四研究所 | High-power high-speed permanent magnet motor rotor and cooling method thereof |
| CN114362424B (en) * | 2021-12-15 | 2024-04-19 | 中车永济电机有限公司 | High-speed self-ventilation traction motor |
| CN115800576B (en) * | 2022-12-27 | 2023-06-20 | 沈阳工业大学 | Permanent magnet motor with high-efficiency air-water mixed cooling system |
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|---|---|---|---|---|
| CN1159090A (en) * | 1995-11-27 | 1997-09-10 | 株式会社日立制作所 | Totally-enclosed type motor |
| CN103746485A (en) * | 2013-12-24 | 2014-04-23 | 上海电机系统节能工程技术研究中心有限公司 | Rotor cooling structure of permanent magnet synchronous motor |
| CN206180727U (en) * | 2016-11-11 | 2017-05-17 | 沈阳工业大学 | Mixed ventilation and cooling system of permanent magnetism traction motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002071577A1 (en) * | 2001-03-07 | 2002-09-12 | Hitachi, Ltd. | Rotary electric machinery |
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2016
- 2016-11-11 CN CN201610994005.XA patent/CN106451864B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159090A (en) * | 1995-11-27 | 1997-09-10 | 株式会社日立制作所 | Totally-enclosed type motor |
| CN103746485A (en) * | 2013-12-24 | 2014-04-23 | 上海电机系统节能工程技术研究中心有限公司 | Rotor cooling structure of permanent magnet synchronous motor |
| CN206180727U (en) * | 2016-11-11 | 2017-05-17 | 沈阳工业大学 | Mixed ventilation and cooling system of permanent magnetism traction motor |
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